Michalke, M. (2014). rk.power: RKWard GUI to perform power analysis and sample size estimation. (Version 0.01-3). Available from http://rkward.sf.net

			@Manual{,
						title = {rk.power: RKWard GUI to perform power analysis and sample size estimation.},
						author = {Meik Michalke},
						year = {2014},
						note = {(Version 0.01-3)},
						url = {http://rkward.sf.net},
					}